diff --git a/README.md b/README.md
index 1a2222dc..b490eba6 100644
--- a/README.md
+++ b/README.md
@@ -2089,6 +2089,10 @@ output of `ctags --version` should list "Exuberant Ctags".
 Ctags needs to be called with the `--fields=+l` (that's a lowercase `L`, not a
 one) option because YCM needs the `language:<lang>` field in the tags output.
 
+NOTE: [Exuberant Ctags][exuberant-ctags] by default sets language tag for `*.h`
+files as `C++`, which is not correct. If you have C (not C++) project, consider
+giving parameter `--langmap=c:.c.h` to ctags to see tags from `*.h` files.
+
 NOTE: Mac OS X comes with "plain" ctags installed by default. `brew install
 ctags` will get you the Exuberant Ctags version.